CODEWITHSUNDEEP
spring-mvc
redzedi
redzedi

Reputation: 1995

Parameter annotations of spring mvc are not inherited

I have a interface for spring-mvc 3.1 controllers that looks like 

  public interface RestCRUDOperations<T> {
         @RequestMapping(value = "/{id:\\d+}", 
                         method = RequestMethod.GET, 
                         produces = "application/json")
         public  ResponseEntity<T> getById(@PathVariable("id") String sourcId);
         //other code omitted
  }

What i observed was, in implementating classes the @RequestMapping annotation was still having effect (without me having to copy that over the method implementation) but the @PathVariable weren't having effect , until i copy paste the annotation at corresponding place before the parameter. Does anybody know if there is a way around this ? And/or spring acknowledges this as a bug it intends to fix or something ??

EDIT :- One ugly way could be to have an abstract class translating methods i.e public abstract class RESTAdapter implements RestCRUDOperations that provides final implementation to these methods and delegates to 2 abstract methods and this abstract class is what the controllers extend.
I wanted something automatic.

Upvotes: 1

Views: 964

Answers (2)

cforce
cforce

Reputation: 11

There is an issue on the tracker now .. see https://jira.spring.io/browse/SPR-14526

Upvotes: 1

Ivaylo Kovatchev
Ivaylo Kovatchev

Reputation: 68

All annotations that I have seen pretty much work the same. The reason is, the code that scans for them only examines the lowest level child in the hierarchy.

As a workaround, I recommend writing a protected wrapper method in a base class. You can then use it from either the base class, which implements this interface, or the derived class. This is similar to your suggestion.

Lastly, as a bit of friendly advice, it is probably a bad idea to be extending other Controller classes from a purely structural point of view. You will almost always regret it.

Upvotes: 0

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